The airport has two large terminals connected in one building, so the transfer is not difficult, you just have to take into account the long distances, from one end of the airport to the other you walk at least 20 minutes.
The transfer times are in line with the size of the airport, with a minimum of 75 minutes for an international transfer and 90 minutes for a domestic flight, unless otherwise specified by the airline. If you have flights on one ticket, you do not have to collect your luggage and re-check it.
If you have a longer connection to a third country (for example, Prague - Chengdu - Sydney), you can take advantage of a free 72-hour transit visa . It is valid only for that city and it is not possible to travel elsewhere in China.